Upgrade your vehicle's ignition system with the HKS M-Series Super Fire Racing spark plugs, specifically designed for high-performance applications. These iridium spark plugs are perfect for those who demand superior ignition performance, exceptional durability, and minimal carbon build-up, making them ideal for advanced tuning setups.
Users have reported noticeable improvements in ignition efficiency and engine responsiveness after installing the HKS M-Series spark plugs. Many appreciate the plugs' ability to withstand high compression levels without degradation, making them a reliable choice for performance enthusiasts.
Other Part Numbers:
HKS #hks50003-M40IL
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Since its beginning, HKS has been committed to providing well-integrated, reliable,and environmentally sound performance systems. Mr. Hasegawa's strong leadership, engineering genius, creativity and willingness to listen to customers are the pillars of the company's success. Monitoring consumer reaction and input on issues pertaining to material quality, external appearance, sound quality, and of course, performance, HKS stays in tune with automotive enthusiasts' needs. Moreover, HKS' products are designed to be user friendly for easy installation.
HKS provides a warranty to the original purchaser of HKS exhaust systems against defects in materials and workmanship for a period of one year. The warranty applies only for vehicle specific exhaust systems. Other products such as metal catalyzers, front pipes, exhaust manifolds, and center pipes are not covered.